Generate stack trace of a running process on OS X

stackshot.sh

# Written by Cheng Zhao(zcbenz@gmail.com).
# Published under Public Domain.
# Usage: stackshot.sh pid

# Path to stackshot tool.
STACKSHOT='/usr/libexec/stackshot'

# Path to symbolicated report.
TRACEFILE='/Library/Logs/stackshot-syms.log'

if [ -z $1 ]; then
  echo "Usage: $0 pid"
  exit 1
elif [ $EUID != 0 ]; then
  echo 'Please run this script as root user'
  exit 2
elif [ ${OSTYPE%%[0-9.]*} != 'darwin' ]; then
  echo 'This script can only run on OS X'
  exit 3
fi

# Run stackshot.
rm $TRACEFILE
$STACKSHOT -p $1 -i -u || exit $?

# Print report.
cat $TRACEFILE